Lots of questions on propagating V3 so here’s the answer… I told some people incorrectly but will bot count off for that mistake. V 3 = (F/ μ ) 1/2 we need to apply a couple of rules for this one First we need to handle the stuff inside the ( ) Let x = F/ μ this is a division which is rule 3 So ∆ x /x = (( ∆ F/F) 2 +( ∆μ / μ ) 2 ) ½ Now ∆μ = 0 because it is a constant so the second term drops out ∆ x /x = (( ∆ F/F) 2 +0) ½ The square and the square root cancel each other so

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